ἐναντίωσις
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → But for extreme illnesses, extreme remedies, applied with severe exactitude, are the best (Hippocrates, Aphorism 6)
English (LSJ)
εως, ἡ,
A opposition, Th. 8.50, Pl.R.454a; in social intercourse, Arist.EN1126b34; opposition, Sammelb.5356.25 (iv A. D.). 2 disagreement, discrepancy, Isoc.12.203 (pl.), Pl.R.607c, etc.: pl., contrarieties, Arist.Metaph.986b1, al.